Devl Derevealing News Today

Carson a double digit lead in iowa. >> im just going to have to work a little bit harder in iowa. i was very surprised to see the numbers. >> reporter: carson, the newly minted iowa front runner, dev l derevealing his rougher edges. saying when he was a teenager. >> many people know the story when i was 14 and i tried to stab someone, and fortunately you know, my life has been changed. im a very different person now. >> reporter: but its the softer carson thats winning over evangelicals. now tru...